User Panel
User Panel
User Panel
|
Posted: 4/12/2006 3:52:33 PM EDT
The action block available from Bushmaster folds around the upper receiver and is then held in a vice. There is another type of action block that makes use of the front and rear pivot pin holes of the upper receiver.
Can an argument be made for one type over the other? I have three complete uppers from Bushmaster. On each of them I can tell where the action block contacted the upper. Does anyone know if the pivot pin designed action block can handle torquing barrels on and off as effectively as the wrap around design? Thanks, Gunzer 
|
|
|
|
Posted: 4/12/2006 4:45:21 PM EDT
[#1]
This was covered here recently. I’m skeptical about the DPMS tool. I have the Bushmaster and it works just fine. So what if it leaves a slight mark on the upper during assembly, can’t see them anymore after some time and CLP.
 Plus, my weapons are not range queens. |
|
|
|
Posted: 4/12/2006 5:03:38 PM EDT
[#2]
this was somewhere here last week, dont waste your money on the DPMS action thingy. It is not for barrel work. buy the Brownells model.
looks like this, leaves a shiney spot on upper, but thats ok in my book.  I supports most of the reciever, the DPMS does not, DPMS model  heres a topic and another topic |
|
|
|
Posted: 4/13/2006 2:26:02 AM EDT
[#3]
ADCO sells the Schuster Upper Holder. Their site shows a picture of it mounted sideways with a piece of wood against the rail of and A4 upper. It's ony $28.00 and if you wanted a no marks on your flat top this might work just do the trick.
Link |
|
|
|
Posted: 4/13/2006 3:14:41 AM EDT
[#4]
Just use the barrel blocks like the Army did for years. No marks on the upper, and you can properly boresight the barrel so no canted front sights.
Boresighting is not possible with the clamshell thingies. |
|
|
|
Posted: 4/13/2006 5:52:14 AM EDT
[#5]
Thank you for the answers. I know the concern for leaving marks on what many on this forum consider "Tools of the trade" does not matter. I appreciate the responses with the lack of flame!
Gunzer 
|
|
|
|
Posted: 4/13/2006 9:18:31 AM EDT
[#6]
I have the Bushmaster block. I’ve never bore sighted my weapons before, but why couldn’t a guy bore sight with the BM block? It doesn’t obstruct the top of the receiver. 
|
|
|
|
|
Posted: 4/13/2006 5:14:58 PM EDT
[#7]
Every clamshell setup I have seen has a receiver insert (fits in the carrier cavity) to keep from crushing the receiver when tightened down. You can not boresight with something in the breech as you tighten. |
||
|
|
|
Posted: 4/14/2006 1:06:39 AM EDT
[#8]
The BM block does not utilize an insert so I guess it would work. |
|
|
|
|
Posted: 4/16/2006 2:56:15 PM EDT
[#9]
To prevent those "Shiney Marks" on your Upper Receiver when you are useing the Wrap around Action Block, I use a a Zip Lock style heavy Freezer Bag. I wrap the receiver with the bag before I put it in the Action Block. You will not get those "Shiney Marks" than, which are caused by the Action Block rubbing on your Upper Receiver.
|
|
|
Win a FREE Membership!
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
